Valve



Jan.. 26, 1932. o. o. FuscH l,842,600

VALVE Filed March 14. 1927 f'atentecl Jan. 26, 1932 UNITED STATES O'I'IS OR FUSGH, OF BELLFLOWER, CALIFORNIA VALVE Application filed March 14, 1927.

This invention has to do with a Valve and it is a general object of the invention to provide a valve in which the pressure is relieved from the outlet side of the valve upon the W valve being closed.

It is a general object of my present inventicn to provide a simple, efiective and improved valve construction which operates to automatically relieve the pressure from the m' outlet side of the valve upon the valve being closed.

Another object of my invention is to provide a construction in the form of an attachment applicable to a standard form of valve to cause pressure at the Outlet side of the valve to be relieved upon the valve being closed.

It is a further object of this invention to ,provide an attachment of the Character men- F tioned which is simple of construction and easily applicable to a standard valve.

The various objects and features of my invention will be best and more fully underr stood from the following detailed description of a typical form and application of the invention, throughout which description reference is had to the accompanying drawings, in which:

Fig. 1 is a detailed, sectional view of a standard form of steam valve showing the construction provided by my invention applied thereto in the form of an attachments; and

Fig. 2 is a sectional view, taken as indicated by llne 2-2 on Fig. 1.

In various situations, particularly, in handling steam, air and various other fluids, it is desirable and, in some cases, necessary to relieve the pressure from the discharge side of the control valve upon the valve being closed, and it is further desirable that the outlet side of the valve remain open at all times when the valve is closed to prevent pressure from developing at the Outlet side of the valve due to slight leakage of the valve or other causes. My invention provides a construction operable to automatically open and maintain open the exhaust or Outlet side of a valve when the valve is closed. My construction lends itself readily to embodiment in the Serial No. 175,091.

form of an attachment applicable to a standard form of valve and, therefore, I have in this disclosure set forth my invention in such form, it being understood, however, that I I do not wish the broader principles of my invention limited to embodiment in a valve attachment as they may obviously be incorporated in a valve construction as a permanent and orignal part thereof.

In settng forth al preferred embodiment of my invention, I have disclosed it in the form of an attachment applied to a standard and typical form of control valve, such as is used almost universally in handling steam, gas, etc. The valve which I have disclosed in the drawings includes, generally, a body 10, having an inlet port 11 in one side and an outlet port 12 in the other side. A seat 13 is mounted in the body at the point of connection betwecn the ports 11 and 12 and a valve 14 is 70 arranged to co-operate With the seat. A stem 15 carries the valve, and a head 16 is applied to the top of the body 10 carrying the stem 15 so that it projects from the body and can v be operated to move the valve 14 into and 5 out of co-operative engagement with the seat 13. The body 10 may be of the usual construction provided with a screw-threaded part 17 to receive the seat 13 and having a comparatively large top opening 18 which is closed by the head 16. The opening 18 is made suficiently large to pass the valve 14 and the seat 13. The top of the body 10 is provided with a fiat annular face 19. Screwthreaded studs 20 project upwardly from the face 19 to hold the head 16. The head 16 is made to fit the top of the body 10 to close the opening 18 andhas a central stuffing box 21 which passes the stem 15. The stufling box normally extends downwardly into the body of the valve through the opening 18. The lower side of the head 16 is provided with a fiat finished part 22 corresponding to the face 19 of the body. The head 16 has a screwthreaded part 211 through which the stem 15 is threaded so that rotation of the stem will cause it to move longitudinally and thus operate the valve 14 carried on its lower end. In the construction shown in the drawings, the threaded part 24: of the head is supported My invention, when embodied in the forin of an attachment, includes, `ge-nerally, a. member or msert, as I will term it, to be lnserted between the head 16 and the top of thev body 10, a valve 31 to be arranged within the body 10 on the stem 15 to `eo-'ope-'ra'te with a seat 32 provided on the lower side of the insert 30, a stop 33 to be applied to the stem 15 to engage andv 'operate the valve 31, and a spring 34 to :act 'on the valve 3-1 and normally ur'ge it iipwar'dlyt'o engage the seat 32.

The insert 30 i`s annular in form and has it's upper side 'or face 36 fini'she'd to fit the face 22 of the h'ead 16 'and has it's lower side or face 37 fini'shed to fit the upperface 19 25%` of the body. F'u'r'th'er, the inser't has openings 38 forme'd through it to pass the st'uds 20 so that it can be inserted between the head 16 and body 1'0 with the st'uds e'xtending through it` and through the head Vso that nuts 40 applied to 'the upper ends o'f the 's'tu'ds' hold it tightly between 'the body 10 and. the head. It will be obv'ious that lsuitable gaskets may be inserted between thev insert and the body and head. The 'in's'e'rt 30 has a port or ou'tle't opening at one side and, in practice,

the :out-let port :45 terminates in an enlargement 46 on` the 'e'xterior 'of the body, which enlargement may'bethreadedto reei've a s'u'itable Vpi'p'e or fittin'g. This construction alj lows the insert to be made c'oi'nparat'ively thin.

The seat 32 i's preferably l'formed sep'ar'ate from the insert '30 and is sc'rewthreaded into the inserLt-'30 so 'that it bea'rs against 'the lower end of the stufiing 'box 21 of the head 16. y In practice, 'a suitable gasket 42 maybe between the seat '32 and stuffingfbox 'to make a fluid tightfconnectionl Vith this construction,'the port '45 i'sseparated from the linterior of the body 10, that' is, 'from the outlet port 12 of the body 10, by the seat member 32. In accordanee with 'my inv'ention, I 'form open ings 'or ports 50 through the seat 'member 32 toconnect theoutlet port 12 and the port 45,

' and I relate the valve 31 to'the member 32 i so that it 'may seat on the' member 32 in a manner to 'close the ports 50.

The valve 31, which maly be termed a pressure release valve, is preferably fitted freely onfthe stem 15 'and is normally urged upwardly by the spring 34 to se'at on the member 32. n the arrangementl shown in 'the drawings, the lsprir'ifg 34 'is arranged under compression between the valve fan'd the valve l14 'and thus normall'y urges the valve 31 upwardly "j onltli'estenl. Theipsto'p 33 is set or fixed on the stem 15 by a setscrew 51, or the like. and is positioned on the stem to engage the valve 31 and move it away from the member 32 as the valve 14 is operated to its seat 13. The valve 31 is preferably provided in its upper side with a recess in which the stop 33 operates, thus givingthe stop sufficient movement betweenthe' valve 31'and the stu'ffing'v box 21 to allow vfull operation of the 'valve 14."

'In using my invention, it is applied to or assembledwit-h the maincontrol valve in the manner clearly illustrated in Fig. 1, so that `the valve 31 is held against the seat member 32 when the main valve 14 is open, thus keeping" the-points 50 v`el'tfis'rd so that there is no escape ,of pressure'from the discharge 12 of the in'a'in valve 'and' the port 45 'of the inse'rt 3'0. The stop 3318 set lso'th't 'the valve, 81 op'ens imme'diately before the valve 14` becomes seated, thus opening the ports 50'` so that pressure from the disc'harge p'oirjtl' vis allowed to 'escape throngh'the ports 50 and the portr45, while the valve 14'is'c1`o'sec'1. It will be appare'nt that iny construction is 'entirely automatic in operation, and it will be obvions that it ean 'be easily and quickly plied to a standard valve construction.

Having defsc'ribed 'only a ty'prcal p'r'eferred formof my inv'onti'on, I do not 'wish to limit myself to the specific details'set fo'rth, 'b''t wish to `reserve to myself any Aol'i'a'nges 'orvariati'on that may appear to those skilled the art or fall within the seope of the following cla'iins. i I

Having decribed my invention, I claimz 1. I'fi combination, o body, o Head 'for the body, a valve in the body, a stem 'carrying said valve ertendi'n''g'r through the head, anr'annular member linserted between the bddyand head 'and having an outletport, a releas'efvalzve forclosingthe port and movable s'epa'r'ately of the main valve, and :means on the 'stem between the main'v'alve and head whereby the release valve is opened When the maiiivalve is'olosed. o I I 2. attacl'iment for Va valve having` a bo'd'y, 'a head 'to close the body, a main valve,

an at'e'in to operate the Inain 'valve including an insert to golbetween the body and head and having'an Outlet port, a release valve 'for closing the -port when dthe mainvalve; is open, and a member applicable to themstem between the main .valve and head 'to 'operate 'said last mentioned valye. V

3. iattaohnientw 'for a vvalve having a body,'a head to 'close thebody, 'a main valve,

a stem to operate'the main valve 'including an'insert to go between thebody and head and Ahaving an JOutlet port, a release valve to be V(':ar'ried lon the stem fornclosing 'the port when the mainfval've is Aopen, 'and a member applicable to the stem to operate said last mentioned valve.

4. An attachment vfora l valve :having a body, a head to close theibody, a main valve,`

and a stem to operztte the main Valve including an nsert to go between the body and head :md having an outlet port, a release Valve to be c'fu'red on the stem, a spring to holdL the last mentoned Valve closed When the main 'Valve is open, and a. member applcable to the stem to opera-te said last mentioned valve.

In Witness that I clam the foregong I have hel'eunto subscribed my name this 8th day of March, 1927.

OTIS ORA FUSOH. 

